Dcscanco [upd] -

At its core, DCS scanning is the cyclical process where the system reads input data from field devices, executes control logic, and writes output commands back to the field.

Traditionally, DCS systems spoke their own "languages"—Proprietary protocols like Honeywell’s TDC 3000, Emerson’s Ovation, or Siemens’ PCS 7. Meanwhile, smart sensors and actuators on the factory floor increasingly adopted open standards like CANopen due to their low cost, deterministic timing, and high noise immunity. dcscanco